[MathOuvrage]
Lehrbuch der Topologie
/ Seifert, H. ; Threlfall, W..
-New-York NY : Chelsea publishing Company, 1934. - 353 p.
[MathOuvrage]
A Textbook of topology
/ Seifert, H. ; Threlfall, W. ; Ed. Birman, Joan S. ; Ed. Eisner, Julian.
-London, New York, Toronto : Academic press, 1980. - xviii, 437
ISBN 9780080874050